Mold for concrete.



MOLD FOR 'GONURBTE. APPLICATION FILED NOW 22, 1906.

'1/ m m g m" PATENTED MAY 14,- 1907.

PATENTED MAY-14, 1907. H. A. STEBER. Y -MOIJD FOR CONCRETE. Arrmou mnFILED HOV.22,1906.

5 SHBBT8-SHBET 3.

Wilma on: I h r THE NORRIS FETERS co, WASHINGTOflL-D. c4

PATENTED MAY 14, 1907.

H. A. STEBER. MOLD FOR CONCRETE. APPLIUATIOH FILED NOV. 22,1906.

5 SHEETS-SHEET 4.

' [H4 mac 1m: NORRIS PETERS co. wnsumcro o. c.

PATENTBD MAY 14, 1907. H. A. STBBER.

MOLD FOR CONCRETE.

APBLIOATIOH FILED NOV. 22,1906.

5 SHEETS-SHEET 5.

' flynqcnfoz witnesses I W a: I g I I rs: NORRIS PETERS c0, WASHINGTON,n cy HENRY A. STEBER, OF UTIOA, NEW YORK.

MOLD FOR CONCRETE.

Specification of Letters Patent.

Application filed November 22, 1906- Serial N0. 344,609-

Patented. May 14, 1907.

To aZZ whom it may concern;

Be it known that I, HENRY A. STEBER, a citizen of the United States,residing at Utica, in the county of Oneida and State of New York, haveinvented certain new and useful Improvements in Molds for Concrete; andI do hereby declare the following to be a full, clear, and exactdescription of the invention,

such as will enable others skilled in the artand partitions or corepieces.

The invention further comprises a mold having sides, ends adapted toengage said sides, and core pieces positioned between said sides andformed in a plurality of parts for easy removal when one of said sideshave been removed.

The object in view is the production of a mold that is provided withcore means that is easily removed after the concrete has hardened in themold.

Another object in view is the production of a mold in which a core isprovided formed of a plurality of parts that may be adjusted to form anydesired shape or block.

A still further object in view is the production of a mold having corepieces formed in a plurality of parts, the variousparts beinginterchangeable and being adapted to be secured in the mold in variouspositions for forming various shaped blocks, the core being adapted tobe removed after one side of the mold has been first removed.

In the accompanying drawings :-Figure 1 shows a perspective view of thepreferred embodiment of my invention, the end pieces being removed. Fig.2 shows a perspective view of a mold embodying the features of thepresent invention, one side and one end being removed to better disclosethe invention. Fig. 3 is a side elevation of a mold embodying thefeatures of the present invention, one side and the ends being removed.Fig. 4 is a view similar to Fig. 3, except that the core pieces arearranged to form a different shaped block. Fig. 5 is a side elevation ofa mold embodying the features of the present invention, one side and theends being removed, the core being so positioned as to form a doubleL-shaped block. Fig. 6 is a side elevation of a mold embodying thefeatures of the present invention in a slightly modified form, one sideand the ends being removed to better disclose the invention. Fig. 7 is aside elevation of one side of a mold formed according to the presentinvention, the same showing a slightly modified form of apertures foraccommodating the securing means for the cores. Fig. 8 is a fragmentaryview in side elevation of a mold made according to the presentinvention, but having the cores thereof made and positioned in aslightly modified way. Fig. 9 shows a group of molds and means forsecuring the same together. Fig. 10 is a perspective view of thesecuring means disclosed in Fig. 9. Fig. 11 is a slightly modified formof means for holding any desired number of molds in position. Fig. 12 isa top plan view of an impression stamp or die used in connection withthe present invention. Fig. 13 is a section through Fig. 12 on line1313. Fig. 14 is a section through Fig. 12 on line 14-14. Fig. 15 is atop plan view of a slightly modified form of an impression stamp or dieused in connection with the mold forming a part of the presentinvention. Fig. 16 is a section through Fig. 15 on line 16-16. Fig. 17is a section through Fig. 15 on line 17-17. v Fig. 18 is a top plan viewof'another modified form of an impression stamp or die used inconnection with the mold forming a part of the present invention. Fig.19 is a section through Fig. 18 on line 19*19. Fig. 20 is a sectionthrough Fig. 18 on line 20-20. Fig. 21, is a plan view of anotherslightly modified form of an impression stamp or die forming a part ofthe present invention. Fig. 22 is a section through Fig. 21 on line2222. Fig. 23 is a plan view of another form of an impression stamp ordie forming a part of the present invention. Fig. 24 is a sectionthrough Fig. 23 on line 24-24.

In the manufacture of artificial stones it has been found desirable inmany instances to mix the compound into a homogeneous mass and tamp orforce the same into molds and after the same has thus received a propersha c it is adapted to be removed from the mo (1, or usually the moldfrom it, and is then ICO placed at a convenient place to set. In theproduction of artificial stone by this method, molds of considerablestrength are required and in view of this requirement it has been founddesirable in some instances to mix the mass from which the stone isto beformed into a substantial liquid state and pour into a mold of anydesirable construction. Molds of this character need not be very strong,as they simply are required to sustain the weight of the material andare not required to sustain heavy pressures as when tamping the matterin place. It is to this class of inventions of molds that usesubstantially liquid matter for forming artificial stones that thepresent invention relates. In the production of a mold for formingartificial stones according to this method commonly known as the Wetsystem, I provide a mold having sides 1 and 2, and end pieces 3 and 4.The sides 1 and 2 are formed with apertures 55 and 6-6 which are adaptedto accommodate securing means as lugs 7 and 8. Enlarged openings arealso formed in the side members 1 and 2 as 9 and 10 which are sopositioned as to have the openings 5 and 6 positioned around the same.The side members 1 and 2 are also provided with notched portions 11-11and 12-12 for accommodating securing means as lugs 1313 and 14 14Grooves 1515 and 16-16 are preferably formed in the side members 1 and 2and connect the apertures 11-11 and 12-12, but said grooves are not anecessity, and may be omitted if desired.

Positioned between the side members or plates 1 and 2 are a plurality ofcore members or plates which are adapted to be securely held in place bythe lugs 7 and 8 engaging the respective apertures 55 and 6 6. The coreplates 17, 18, 19 and 20 when positioned as shown in Figs. 1 and 2 ofthe drawings are adapted to form a T-shaped block as will be clearlyevident.

It will be observed that the core members or plates are beveled at 2 1and 22 for forming a sharp corner. In some instances I have found itdesirable to equally bevel the core plates on each side as clearly seenin Fig. 3 of the drawings. This will produce a flattened corner insteadof an acute corner. By thus beveling the corners it assists in moreeasily removing the core plates or members from contact with the blockafter the same has been formed.

It will be observed that the apertures 5 and 6 and the projections 7 and8 are so arranged that the core members 17, 18, 19 and 20 may beinterchanged as may be desired, and may also be placed in any positionfor forming various shaped blocks. In Fig. 4 of the drawings will beseen how the plate 19 may be positioned to form a continuation of theplate 17. By arranging the plates in this manner an L-shaped block issecured without changing the mold and by simply read justing the coresthat are already in use.

In Fig. 5 will be seen a slightly modified form of a core plate, as 23,which is adapted to fit in the apertures 5 5 and 6-6 in connection withthe plates 18 and 20 so as to form a substantially double L-shapedblock. In this form I preferably form both ends ol the plate 23 withbeveled portions on each side to register with the beveled portions ol'the plates 18 and 20 so as to form a. somewhat rounded or beveled cornerin the L of the block.

In Fig. 6 will be seen a slightly modified form of end plates which arebent inward at 24 and 25 for forming an ofi'set portion in the ends ofthe block that is to be made. Positioned within the apertures 5--5 arecore plates or members 26, 27, 2S and 29, while in the apertures 66 arepositioned core plates or members 30, 31, 32 and 33. The core plates 26,27, 2S and 29 are all made of the. same shape and have provided beveledportions 34 and on their ends I or forming a substantially rounded orbeveled corner in the hollow or core portion of the block that is to beformed.

It will be observed that plates 26 and 28 are so positioned as to havetheir beveled portions 34 and. 35 facing outward and engaging the block,while the members 27 and 29 have their beveled portions 34 and 35 lacinginward and out of engagement with the block. The members 30, 31, 32 and33 are. formed similar to the members 26, 27, 2S and 29, and have theirbeveled portions 36 and 37 facing in a similar manner to the beveledportions 34 and 35. By thus providing beveled portions for the coremembers the same may be easily removed. after the side plates 1 and 2have been removed. The plates 27 and 25) and 31 and 32 are first removedafter the side members 1 and 2 have been removed, then the other coreplates are also removed. In this way a core is formed in a block inwhich the core plates are easily and quickly removed without injuring inthe least the block, as the beveled portions of the members 27 and 29,as will be clearly seen in Fig. 6 of the drawings, may be removedwithout in the least molesting the block. After they have been removedthe remaining members also may be removed without liability of breakingthe block.

Sometimes it is desirable to make av larger beveled portion in the blockthan the beveled portions 34 and 35 will form. When it is desired tomake a large beveled portion, the core plates are made with beveledportions 38 and 39 as clearly seen in Fig. 8 of the drawings. The coreplates as seen in Fig. H of the drawings, are all made of the same sizeso that when they are placed in position with the beveled portions 38and 39 facing outward the beveled portions of the respective plates willbe in alinement and thus form a beveled corner in the block of twice thesize as will be formed by the beveled portions 34 and 35. When it isdesired to remove the blocks from the mold the side members 1 and 2 arefirst removed and one of the core plates is removed, as clearly seen indotted lines in commodating the securing lugs 77- and S-8. The apertures55 and 66 are arranged in similar relation and position to the apertures5-5 and 66 so as to accommodate the various core plates in their variouspositions when used to form various shaped blocks.

In assembling the mold forming the present invention, one of the sidesis held in position and the endmembers or plates 3 and 4 are placed soas to engage the apertures 11 and 12 and the grooves 15 and 16. Thesecuring members 7 7 and 88 of the various core plates desired to beused are then inserted in the respective apertures 5 and 6 in themember 1. Then the other side member or plate 2 is placed in position'sothat the other lugs 7 and 8 engage the apertures 5 and 6 in the plate 2,and the end members 3 and 4 also engage the slot and apertures formed inthe end of the member 2. The mold is then provided with a clamping meansas 40 for holding the same. In practical operation usually a number ofthe molds are placed together as clearly seen-in 9, and then clampedtogether by the clamping means 40. Suitable blocks as 41 are preferablyused between each mold so as to more firmly hold the sides 1 and 2always in proper position. As will be evident the tie-rods or members 42and 43 of the tying means 40 are adapted to pass through the apertures 9and. 10 in the sides of the molds and thus avoid passing through theblock. A suitable tensioning device as a clamping nut 44 is provided foreach of the rods 42 and 43 so as to always firmly clasp the variousmolds together. After the molds have been clamped together either singlyor in a series as seen in Fig. 9, the same is placed upon a pallet or ifdesired a sand bed either smooth or having a prepared configurationthereon and the substantially liquid matter is poured into the molds.Being in a liquid form the matter will run to all parts of the mold andwill take the shape of the sand upon which the mold is positioned. Fromthis it will be observed that a mold formed according to the presentinvention has only the sides ends and core plates and no top or bottom,but uses a sand bed or the pallet as the bottom.

In some instances it has been found desirable to use a framework as 45,as clearly seen in Fig. 1.1 of the drawings. In this case the frame orhousing 45 is completely filled with molds, and is preferably providedwith the .spacing blocks 41. A suitable tensioning device, as a setscrew 46, is provided at one end. of the frame 45 for firmly holding themolds in proper position.

I have described two specific means of a similar nature for holdingmolds together formed according to. my invention, but I wish itunderstood that I consider myself at liberty to use any form of securingmeans that is adapted to accomplish the purposes desired, and that I donot consider myself limited to the specific form of clamping means.

My invention is particularly intended for use in making artificialstones according to the wet system, but. it will be evident that certainforms of blocks may be made with equal advantage according to the drysystem. When it is desired to make a T-shaped block, an L-s'haped block,or the like, the dry system may be used and the material tamped orpressed into position in the usual manner. When using the dry system, ofcourse, it will be evident that the molds must be made considerablyheavier and stronger than when using simply the wet system. By thusconstructing a mold according to the present invention, blocks of aplurality of forms may be formed by a simple system of core platesaccording to the wet system that have not heretofore been made accordingto the dry system without more complicated and multipartite molds. Themolds then may be used. if desired in producing blocks according to thedry system, but in a simpler form. It will be thus seen that moldsformed according to my invention are adapted for making artificial stoneaccording to either system, provided the molds are made sufficientlystrong, and the equal adaptation of the mold for either system andforming of the various shaped blocks forms important features in thepresent invention.

In connection with the mold proper, I use various forms of impressionplates or dies for forming the face of the block in various shapes foruse in various purposes. In some instances, I place an impression plateor a die upon the surface of a block that is being formed so as to formany configuration that may be desired. The impression plate when 'tlT-JSplaced upon the matter being formed into a block will sink downward intothe mass and force the surface of the block into the proper form.Sometimes I find it desirable in making the various configurations. forthe surface of the block being formed to use a framework. The frameworkis simply placed upon the block that is being formed and compositionsimilar to that of which the block is formed is placed within the frame&

and is adapted to contact with the material of the block. The matteradded in this way is sufficiently wet as to be formed integral with theblock proper, but is held in a prede' termined shape by the frame.

Referring more particularly to Fig. 12 of the drawings, a frame 47 isprovided, which is adapted to be placed upon the block that is beingformed in the mold. The frame 47 is provided with an opening 48 intowhich matter is placed that is desired to be formed integral with theblock, the opening in the frame forming a configuration. From Fig. 13 itwill be seen that the inner walls 4949 of the frame 47 are beveled so asto easily remove the frame after the block has set. The ends are alsobeveled at 5050 in a similar manner to the side walls IQ-49.

Referring to Figs. 15, 16 and 17, a slightly modified form of frame 51is shown in which a plurality of openings, as 52 is provided for forminga panel configuration.

Referring more particularly to Figs. 18, 19 and 20 there will be seenanother slightly modified form of a frame 53. A comparatively largeopening 54 is provided in one end of the frame 53 and two comparativelysmall openings 55 are formed in the end opposite to 54. In all thevarious modifications of frame, as shown in Figs. 12, 15 and 18, thewalls of the various openings are beveled as seen at 49 and 50 so as toeasily remove thevarious frames after the block has set.

In Figs. 21 and 22 will be seen another slightly modified form ofimpression plate. The impression plate 56 is adapted to be placed uponthe surface of the block that is being formed, and form ridges orcolumns thereon. Blocks made with a facing formed by the impressionplate 56 are especially adapted for use as belting blocks, but also maybe used in any other place that may be desired.

In Figs. 22, 23 and 24 will be seen another slightly modified form ofimpression plate 57 or die in which a rosette or the like is formed sothat when the die or plate is placed upon the surface of the block itwill form an impression thereon according to the impression contained inthe impression plate 57.

In the form of impression plate shown in Figs. 21 and 23, I preferablyplace a layer of dryer material than is formerly placed in the mold soas to accommodate the weight of the impression plates. The dry matterthus placed upon the surface of the block must be sufficiently wet toform integral with the remaining part of the block when the same sets. Ipreferably use the coating just described, but it will be evident I maydelay the placing of the impression plates upon the block until the samehas begun to set. After the same has begun to set, it will sustain theweight of the impression being formed.

plates so that by either means any desired configuration may be formedin the block by the impression plates.

It will be observed that the impression plates shown in Figs. 21 and 23will form configurations in the block that is being formed while theframe shown in Figs. 12, 15 and 18 will form configurations upon andprojecting slightly from the block that is In the one instance theconfiguration is made from the matter already in the mold, while in theother the conliguration is added matter. By thus providing various formsof frame and impression plates any desired configuration may be madeeither in the form of small columns, fancy configurations, or in factany arrangement and combination of configurations as may be desired.

I claim 1. A mold, comprising walls and ends and a core formed of aplurality of transposable members.

2. A mold, comprising removable sides and ends, and a core positioned ina plane perpendicular to the sides and formed of a plurality ofindependent transposable members.

8. A mold, comprising bodily and independently removable sides and ends,a core mounted between the sides and supported thereby said core beingadapted to be transposed for forming various shaped blocks, and meansfor securing the mold together.

4. A mold comprising a pair of sides formed with notches in the endsthereof, end members formed with projections that are adapted to engagethe notches in said sides, and a core formed of a plurality oftransposable parts positioned between said sides and engaged by saidsides for holding the same in any desired position.

5. A mold comprising side and end members, a core positioned betweensaid side and end members, said core comprising a plurality ofinterchangeable parts formed with projecting lugs for engaging said sidemembers, and also formed with beveled portions for permitting easyremoval of said core, and means for holding said sides and core inposition.

6. In a mold. having ends and sides, a core formed of a plurality ofmembers means for individually supporting said members at both ends,said supporting means being of identical construction.

7. A mold comprising sides and ends, said sides being of identicalconstruction and formed with series of apertures therein, means forholding said sides and. ends together, and a core formed in partspositioned between said sides, said core being formed with means forengaging some of said apertures in said sides and adapted to beingshifted among the series of apertures to vary the shape of the block.

8. Ina device of the character described, a core formed of a pluralityof separate and independent plates, each plate having individ ualintegral means formed thereon to engage the sides for its own supportindependent of all other members of the core, said plates be ing adaptedto be separately removed.

9. A mold comprising removable sides and ends, means for securmg thesame together,

and a laterally positioned core formed inparts, said core being formedwith lugs for engaglngsald sides, said lugs being so positioned as topermit the shifting of the parts between said side members and removablysecured thereto, said core plates being adapted to be removed by beingcollapsed, and means for holding said side members and core in positionsaid grooves being adapted to hold said ends in position.

12. A mold comprising sides and ends, means for securing the sametogether, and a core positioned between said sides formed with aplurality of members, said members being adapted to be independentlyremovable, said member being also formed with beveled portions forforming a beveled corner in the block.

13. A device of. the character described, comprising a mold with bodilyremovable sides, a core member secured between said sides, said corecomprising a plurality of parts, and means passing longitudinallythrough said sides and the hollow of the core member for holding saidmold in operative position the said holding means being at all times outof contact with the block being formed.

14. In a device of the character described,

comprising a mold having perforated and notched side members, plateshaving extensions formed thereon, said extensions being adapted toengage the notches in said side members, and plates formed with lugsthereon positioned between said side members for forming a core, saidlugs engaging said perforations for holding the core in position.

15. A device of the character described, comprising a mold havingperforated and notched sides, end members formed with extensions, saidextensions adapted to engage the notches in said sides, and a pluralityof plates of identical construction positioned between said sides andadapted to engage said perforations, said plates being adapted to bevaried in position for forming a plurality of different shaped blocks.In testimony whereof I affix my signature in presence of two witnesses.

HENRY A. STEBER.

Witnesses:

ANTHONY ANDEs,

JOHN G. SWEENEY

